divide tests into folders #876

Job	Run time
build (ubuntu-latest, 3.9, latest)	11m 6s
build (ubuntu-latest, 3.9, 8.2)	7m 44s
build (ubuntu-latest, 3.9, 8.1)	7m 36s
build (ubuntu-latest, 3.13, 8.2)	7m 39s
build (ubuntu-22.04, 3.7, 8.2)	7m 33s
build (ubuntu-latest, 3.13, 8.1)	7m 31s
build (ubuntu-latest, 3.13, latest)	12m 23s
build (ubuntu-22.04, 3.7, 8.1)	7m 38s
build (ubuntu-22.04, 3.7, latest)	11m 55s
fossa-scan / Run fossa scan on repository	33s
fossa-scan / Fetch fossa results	1m 14s
	1h 22m 52s

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